<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/logo.png" alt srcset />
        <span>后台管理平台</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主题区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse?'64px':'200px'">
        <!-- 侧边栏菜单区域 -->
        <div class="toggle-button" @click="toggleCollapse">
          |||
        </div>
        <!--default-active：被激活  -->
        <el-menu
          background-color="#333744"
          text-color="#fff" 
          active-text-color="#1A73E8"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/'+subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/'+subItem.path)"
            >
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{ subItem.authName }}</span>
              </template></el-menu-item
            >
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  created() {
    this.getMenuList()
    this.activePath=window.sessionStorage.getItem('activePath')
  },
  data() {
    return {
      //是否折叠
      isCollapse: false,
      //被激活的高亮
      activePath:'',
      menulist: [],
      iconsObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      }
    }
  },

  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status != 200) return this.$message.error('请求错误')
      this.menulist = res.data
      console.log(res)
    },
    handleOpen(key, keyPath) {
      console.log(key, keyPath)
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath)
    },
    toggleCollapse(){
     
        this.isCollapse=!this.isCollapse
     
    },
    saveNavState(activePath){
        window.sessionStorage.setItem("activePath",activePath);
        this.activePath=activePath;
    }
  }
}
</script>
<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 0px;
  min-height: 400px;
}
img {
  width: 40px;
  height: 40px;
}
.home-container {
  height: 100%;
}
.el-header {
  background-color: #44caad;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  & div {
    display: flex;
    align-items: center;
    & span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  
  z-index: 11;
  position: relative;
  padding-top: 10px;
}
.el-menu {
  border-right: none;
}
.el-main {
  background-color: #fff;
}
.iconfont {
  margin-right: 10px;
}
.toggle-button{
    background-color: #4a5064;
    color:#fff;
    font-size: 10px;
    letter-spacing: 3;
    text-align: center;
    line-height: 24px;
    cursor: pointer;
}
</style>
